Quirrell vs. Snape

he wasnt aloud to, because quirrel knew snape was a deatheater, but snape didnt know quirrel was.

ehhhh....quirrel didn't knew snape was a death eater at that time when LV himself didn't knew....
just pure logic...

I now believe Snape could win, though not by much. Quirrell must have beaten Snape at the one curse that jinxes brooms because he must have been practicing that curse before the Quidditch match to make sure nothing went wrong. I still think it'd be close, though.